That's completely true to me. I don't know how many but I guess there's a ton of software developers who aren't really interested in projects they are developing, but that doesn't seem to tie with quality of works.
Personally, I haven't really interested in any product out there. I tried but there were no such a thing. I've realized that at the end of the day I'll have to build a little profitable product and start the next possible ways from there. (I know, nothing new about that realization and consequence but I still & will have to do this)